[PATCH v13 01/11] KVM: x86: Include CET definitions for KVM test purpose

Yang Weijiang
2020-07-01T08:06:16Z

These definitions are added by CET kernel patch and referenced by KVM,
if the CET KVM patches are tested without CET kernel patches, this patch
should be included.

Signed-off-by: Yang Weijiang <weijiang.yang@intel.com>
---
include/linux/kvm_host.h | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 01276e3d01b9..20e0fe70d3f7 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -35,6 +35,38 @@

#include <asm/kvm_host.h>

+#ifndef CONFIG_X86_INTEL_CET
+#define XFEATURE_CET_USER 11
+#define XFEATURE_CET_KERNEL 12
+
+#define XFEATURE_MASK_CET_USER (1 << XFEATURE_CET_USER)
+#define XFEATURE_MASK_CET_KERNEL (1 << XFEATURE_CET_KERNEL)
+
+/* Control-flow Enforcement Technology MSRs */
+#define MSR_IA32_U_CET 0x6a0 /* user mode cet setting */
+#define MSR_IA32_S_CET 0x6a2 /* kernel mode cet setting */
+#define MSR_IA32_PL0_SSP 0x6a4 /* kernel shstk pointer */
+#define MSR_IA32_PL1_SSP 0x6a5 /* ring-1 shstk pointer */
+#define MSR_IA32_PL2_SSP 0x6a6 /* ring-2 shstk pointer */
+#define MSR_IA32_PL3_SSP 0x6a7 /* user shstk pointer */
+#define MSR_IA32_INT_SSP_TAB 0x6a8 /* exception shstk table */
+
+#define X86_CR4_CET_BIT 23 /* enable Control-flow Enforcement */
+#define X86_CR4_CET _BITUL(X86_CR4_CET_BIT)
+
+#define X86_FEATURE_SHSTK (16*32+ 7) /* Shadow Stack */
+#define X86_FEATURE_IBT (18*32+20) /* Indirect Branch Tracking */
+
+/* MSR_IA32_U_CET and MSR_IA32_S_CET bits */
+#define MSR_IA32_CET_SHSTK_EN 0x0000000000000001ULL
+#define MSR_IA32_CET_WRSS_EN 0x0000000000000002ULL
+#define MSR_IA32_CET_ENDBR_EN 0x0000000000000004ULL
+#define MSR_IA32_CET_LEG_IW_EN 0x0000000000000008ULL
+#define MSR_IA32_CET_NO_TRACK_EN 0x0000000000000010ULL
+#define MSR_IA32_CET_WAIT_ENDBR 0x00000000000000800UL
+#define MSR_IA32_CET_BITMAP_MASK 0xfffffffffffff000ULL
+#endif
+
#ifndef KVM_MAX_VCPU_ID
#define KVM_MAX_VCPU_ID KVM_MAX_VCPUS
#endif
--
2.17.2